Finding the Fourth Proportional to 37,385.56, 51,591.87 and 20,389.48

Step by Step Solution

1. Step 1: Write the proportion equation
   37,385.56 : 51,591.87 = 20,389.48 : x
2. Step 2: Convert to fraction form
   37,385.56/51,591.87 = 20,389.48/x
3. Step 3: Cross multiply
   37,385.56x = 51,591.87 × 20,389.48
4. Step 4: Simplify right side
   37,385.56x = 1,051,931,401.53
5. Step 5: Solve for x
   x = 1,051,931,401.53/37,385.56
6. Step 6: Final answer
   x = 28,137.37